OS X :: How To Disable Connected External Monitor

Jan 17, 2007

Is there an easy way to cause a connected external monitor to be "disabled?" E.G. I have an iMac connected to an LCD TV (via VGA, spanned, external at 1360x768). If the TV is plugged in, even if it's off, the computer switches to spanning mode. The consequence of this is that, if my preferred setup is to have the external be main, for instance, I essentially have to unplug it from the iMac whenever I don't want to be using it. Even if the external is the 2ary dsplay, it means that the mouse can go off the edge of the screen on one side, and that two of the hot corners are messed up. Is there any utility that could do something like add a "disable external display" item to preferences or the menu bar?

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OS X :: Disable Internal Display While Using External Monitor?

May 25, 2010

Is there a tweak out there that will disable the internal display while using an external monitor WITHOUT having to first close the lid on my macbook because I just leave my macbook plugged in for weeks a couple feet away from my desk and it's become a hassle to first close the lid, then move my mouse, then open the lid for better ventilation. I just want to leave it open and disable the display!

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IMac :: Options To Disable External Monitor Instead Of Unplug?

Aug 20, 2010

Is there a way to disable the external monitor? I don't want to have to unplug it every time I want to disable it... There must be a way. What options do we have?

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PowerPC :: Run With Lid Closed - Connected To External Monitor?

Aug 25, 2008

I want to run my g4 17 inch powerbook connected to an external screen with the lid closed, when i shut it the external screen goes off aswell, I have been told to use an external keyboard etc, I want to use a bluetooth keyboard and mouse. Is there anyway of doing this?

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MacBook Pro :: External Monitor Connected Via DVI Not Identified

Jul 26, 2010

I am trying yo plug my NEC EA231WMi into my MBP via DVI and a DVI to mini display port Adaptor and the computer is not recognizing the monitor. It does nothing when I plug the monitor in.

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MacBook Air :: WiFi Slow Down When External Monitor Connected?

Jan 4, 2009

Did any of you experienced this ? My WiFi slows down or even stops working when external monitor is connected (via the big connector, don't remember it's name, DMI or something like that). Air Rev A, 1.6.

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MacBook :: WiFi Slowdown When Connected To TV (No External Monitor)

Sep 28, 2009

I have a strange problem with a WiFi slowdown when connected to a TV. Here are the specs of the equipment:
2.2 Ghz white macbook, santa rosa, 4 gb ram, purchased January 2008
Panasonic TV connected via HDMI to DVI cable + Apple Mini DVI to DVI connector
USB Western Digital harddrive connected to a 500 GB Time Capsule (1st edition, no dual channels)
Snow leopard 10.6.1

Before upgrading to snow leopard, I would frequently use the macbook to provide video to the above mentioned TV streamed from a hard drive connected to an imac (connected to the same time capsule). I moved, and upgraded to snow leopard, and haven't tried this until finished setting up my equipment yesterday. I can stream videos to the macbook from this hard drive fine when nothing is connected. However, the moment I plug in the mini-DVI connector, the WiFi drops to a crawl. This applies not only the to air disk but any data from the network (internet, etc.)

A couple of additional notes: Display is set to mirror. Has nothing to do with clamshell mode because the macbook isn't closed. Nothing to do with location/interference- the effect is instantaneous with plugging and unplugging the cable. The base station is actually closer than in my previous setup and is pretty much 20 feet away in direct line of sight. I connect to another external monitor daily at work (vga, again with apple mini dvi to vga adapter)- no issue whatsoever restart did not help. I canceled all time machine backups over the network to limit that as a factor- no effect.

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Applications :: Quicktime Plays When External Monitor Connected

May 16, 2010

Recently, my quicktime (with Perian installed) stopped playing AVI files - giving me the whole 'The movie is in a format Quicktime doesn't understand' business. This made no sense to me as AVIs were playing fine previously. Nothing I did could fix the problem. HOWEVER, just today I plugged in an external monitor to test something out; lo and behold, quicktime is playing AVI files just fine again. What's going on?! Has anyone seen this behaviour before?

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MacBook Pro :: How To Turn Off The Builtin Display When Connected To An External Monitor

Nov 21, 2010

WITHOUT closing the lid, because i like using the touchpad. i know that you can turn the brightness all the way down, but sometimes windows from the main screen randomly open on the other display. and it also slows down performance. i want to turn off the 13" screen as if the lid was closed. that way, the mac doesn't even see it.

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Hardware :: 32" Sony XBR 9 - No Signal When Connected As External Monitor

Dec 10, 2009

I have my macbook pro connected t my sony xbr 9 tv, but the tv says there is no signal. however, the macbook pro recognizes the sony tv and it's resolutions. it connected through a mini displayport to hdmi adapter i bought off monoprice, and i don't think it's faulty as i used it in my living room tv thats also a sony.

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IMac :: ViewSonic External Monitor Appears Yellow When Connected

Feb 4, 2010

I have a 24 inch imac and i am connecting the viewsonic VG921m (19'') monitor using the mini-dvi port. The external monitor appears dull (whites have a yellow tint) Is there a way to match up the display to look like mac? I am using the monitor next to my iMac and its currently distracting as its displaying same colors in different tone.

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MacBook Pro :: Internet Connection Slows Down When External Monitor Connected

May 22, 2012

When I close my macbook pro whilst it is connected to an external monitor the internet connection slows down?

Mac Pro, Mac OS X (10.6.7)

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MacBook :: Unibody Display - Connected To External Monitor - Black Screen

May 7, 2010

Well my unibody macbook display decided to screw up last night, it was working fine last night no problem. Connected to a external monitor. I fell asleep last night with front row left on, obviously it went to sleep and then I woke up and the screen was black. Now the LED lights are working, my external display is also working. The display settings recognize a screen being present (when I click detect displays and gather windows - 2 windows appear). Ive reset PRAM, SMC, reseated the RAM, control+shift+eject (which just made the screen flicker a little after turning it back on) and Im out of ideas. Its out of warranty and about about 18months old.

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MacBook Pro :: New 23" External Monitor Connected Via Mini DVI To HDMI Adapter

May 2, 2012

I have a 13" MBP and just bought a new 23" external monitor connected via mini DVI to HDMI adapter.The monitor is recognized fine, but there is extreme jitter on the screen - basically very annonying and unusable.

MacBook Pro

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MacBook :: Can't View The Entire Screen When Connected To An External Monitor Via VGA Adapter

May 29, 2012

my screen cracked on my MacBook and I'm unable to see anything (it's just fuzzy white) so I purchased the VGA adaptor so I can connect to an external monitor.  When I plug in the screen is zoomed to close and I can not view the entire screen.  I can see one application that I have open, which is iMovie but can not see the top menu or my icons at the bottom.  How can I adjust the settings seeing how I can not access the menu bar or anything else for that matter.  It also appears to be showing a second screen, maybe not my desktop because the background is different.  I'm running on OS X Lion.   

I'm trying to finish an end of the year slide show for my kindergartner that I need completed today, I was five minutes away from finalizing then my two year old threw his monster truck at my screen!

MacBook, Mac OS X (10.7.4)

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MacBook :: High Frequency Ringing Sound When Both External Monitor & Speakers Are Connected?

Jan 8, 2009

I searched the archives and I can't believe no one has mentioned this yet! This is a huge problem on both my Rev A and my new Rev B. When you connect an external monitor and external speakers using the headphone output, there is a high frequency ringing sound coming out of the speakers. I've managed to live with it by turning the treble to minimum and keeping the volume low enough but at the expense of sound quality. The strange part is, if you disconnect the monitor, the ringing sound stops. The problem only occurs if you have speakers and monitor plugged in at the same time. I've tried this on my Samsung monitor, my SONY TV, and my Panasonic audio receiver. The problem occurs with both Rev A and Rev B while my white MacBook and 2007 MacBook Pro all sound fine.

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MacBook Air :: Doesn't Detect External Monitor Connected Through Mini Display Port To HDMI Adapter

Sep 8, 2014

I bought a MBA 13" last month and now I'm trying to connect an external monitor through a Mini Display Port-to-HDMI adapter and most of the times the display shows a message "No signal detected"...

I've tried all the possible combinations between the MAC and the Monitor but it would seem a random matter.

MacBook Air (13-inch Mid 2012), Mavericks 10.9.4

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IMac :: Use Dell Monitor As Primary Monitor Connected?

Oct 22, 2009

I was surprised one day to find an inch of white line running from top to bottom on my screen. Then after a week it expanded to two inches white line, then suddenly it turned all black and I can't see two inches of my screen from the right edge. I was reading some forums and found out that I can use a dell monitor as a secondary monitor, but is it possible to use the dell monitor as the primary monitor in case the black line will spread throughout the entire iMac screen? so the iMac would serve as a stand alone processor like a regular desktop?

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IMac :: External Monitor - Bad Mouse Tracking When External Monitor Off?

Jan 9, 2010

I have a 27" i7. I have a 24" DVI Montior hooked up to it via MDP->DVI adaptor. When the 24" Monitor is on, everything is fine. When I turn the monitor off, the magic mouse tracking on the 27" screen stutters. I am not kidding - it took me ages to figure out that to fix I either need to turn the other monitor on OR disconnect the MDP->DVI adaptor.

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Windows On Mac :: Way To Disable Laptop Monitor?

Dec 14, 2010

I am running bootcamp with xp on my older non unibody macbook pro. I have it hooked up with a dell monitor, but I want to see things only on the dell monitor and not the macbook one. This works fine booted into OSX, but I can't find a way to do it in windows. Is there a way to disable my laptop monitor?

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Mac Mini :: Monitor And Tv Connected At Same Time

Mar 22, 2009

I am considering replacing my G4 Mac mini, which is used primarily as a desktop. It turns out that my computer desk is very close to my Sharp Aquos LC32GA5U TV. With the right adapters, it should be possible to have my monitor and TV connected to the new Mac mini at the same time. The DVI/HDMI cable to my TV should be about 12 ft. I have some questions about a setup like this. Will a video cable of this length cause any issues? My TV will not be turned on all the time. Does Leopard recognize the fact that a display is turned off and prevent apps from putting their windows on it?

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Mac Mini :: Can It Be Connected To A Ordinary LCD Monitor

Apr 1, 2012

can it be connected through what wire cables?

Mac mini, iOS 5.1

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Power Mac :: Monitor Which Connected To G4 But Won't Connect To G5?

May 27, 2012

I own a g4 quick silver which has a "formac" flat monitor. This monitor connects straight in to the g4. I have just bought a g5 but it will not connect, I have looked at adaptors but cannot find the right one. Does.


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Mac Mini :: Won't Boot With VGA Monitor Connected

Jun 13, 2012

I have a new Mac Mini connected to an older VGA monitor using the Apple brand VGA adapter.  The mini is fully up to date and runs perfectly when booted.  However, if I reboot the mini with the VGA monitor connected, it fails to boot.  I just hear the faint chime sound every other second.  There is no output to the monitor and the only way I can get it to boot is to disconnect the monitor and then power cycle the mini.  I can reconnect the monitor just seconds after powering back on and it finishes booting properly. 

I've also tested with an HDMI connected monitor (without the VGA adapter) and it boots just fine and the display works properly.  

Mac mini, Mac OS X (10.7.4)

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Mac Pro :: 2009 Won't Communicate With The Connected Monitor

Aug 25, 2014

my mac pro desktop was bought roughly in 2009.its running the latest os that this model can run with tiger.the problem used to be intermittent,now it is very hard to get this thing to communicate with the external monitor.the led on the mac shows that its on but it won't chime as it starts up.whenever it did cut on,it would stay on for a moment then a dark tint would scroll over the screen desktop from top to bottom and everything freezes.i then have to turn off the computer from the button.A side note:This computer never functioned properly from day one when i was using it to run my protools music recording DAW.i could barely complete songs as it would run out of cpu and processing power.the computer has 14 gigs of ram,and quad core processing.i took it to apple store for tech support but they found nothing.now i am solely trying to run my serato dj software with it.based on these symptoms,what is wrong with my computer? is it software problem or is it a bad graphics card,bad cpu,is there any parts i can buy to inexpensively overhaul this computer?

Mac Pro, Mac OS X (10.6.8)

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Hardware :: Powerbook With Broken Monitor - Force Boot To External Monitor?

Jan 31, 2010

I have a G4 powerbook with an LCD that only displays the top 25% of the screen. I've been using an external monitor with it just fine. Today, I reinstalled the OS and ran into a problem. The main OSX startup menu (you know, where it asks for your location, timezone, personal info, etc) is prompting me for information, and I can't see the forms to fill them in! The external monitor defaults to "extended" as opposed to "mirrored", and the forms are embedded, meaning I can't drag them over to my external monitor. Obviously, if I can't fill out these forms and get to the desktop, the laptop is completely useless.

Does anyone know how to force the external monitor to be "mirrored" from startup? Is there a keycommand?

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OS X :: Monitor Suddenly Goes Completely White / External Monitor Goes Black

Jul 30, 2005

I have been using the latest macbook pro 13.3" since April 2010. Over the last week the monitor suddenly goes completely white and the external monitor goes black. The laptop becomes unresponsive although the programmes opened continue running (e.g a skype voice call would continue without interruption although the monitor is all white).

The only solution at the moment is to press the turn off button for a few seconds then switch the laptop on again. It will then work normally until for no apparent reason this happens again.

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MacBook :: Connected To Vga Monitor - Never Works Smoothly

Mar 16, 2010

I feel like when i try to hook up my macbook to a monitor with the vga adaptor, it just never works smoothly. i always have to play around with the wires for a while until i have an image on the screen. plug out the usb mouse and keyboard, plug them back in, unplug the adaptor, plug it back in. then finally it works, and this is every time i try to do it. i prefer to to it with my laptop closed, not in dual screen mode. can anyone point me to a simpler process to do this? its getting really annoying

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Hardware :: Any Keyboard And Mouse For Mac (Connected To Monitor)

Apr 28, 2010

Looking for a keyboard (preferably wireless) and mouse to hook up to my mac that will be connected to a monitor. I also want to use the display for my pc laptop. Will I have to keep registering and unregistering the keyboard and mouse every time I want to switch between my mac and pc? Also does anyone know if I will have any problems with the apple wireless keyboard and logitech mx revolution mouse with both my computers?

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MacBook Pro :: Connected To Vga Monitor - Screen Just Flickers

Aug 18, 2010

I bought a 22 inch monitor. its a pretty generic brand, but its very high resolution and works great on other computers. i got the vga adapter for my aluminum macbook (i posted in this section because its closer to the 13" mbp). i have an apple keyboard connected to it. i try to use it in clamshell mode and when i press a button on the keyboard to wake it up the screen just flickers as if its trying to adjust the resolution. strangely enough, it works perfect in mirror mode. anyone have an idea?

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